Hello
I have an excel file with three columns,first column is x coordinate,second column is y coordinate,third column is values of stream function in fluid,i need to plot contours of stream function.i successfully import the data with excel loader,but when i choose contours in the sidebar nothing happens.could anybody give me an step by step guide on how to plot contours of stream function from my excel file?
(I have read some help files but I couldn't make it to draw contours in tecplot.)

(is there any syntax or commands that i can add to my fortran code so that it creates a tecplot file (plt) and there is no need to insert data from an excel file?)
Thanks in advance

Tecplot is unable to create a contour plot from data that is "unconnected" (which is what Excel data are). One can connect data in Tecplot a variety of ways. Once Tecplot understands the connectivity of the data, then it will be able to produce the contour.

I created a rectangular grid for my xy data, but when I interpolate the data, it interpolates the data from the new grid on my previous ordered data. I mean when I interpolate data, all the values both on the new grid and my ordered data changes to 0.